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Science · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 1 · Q30
List two differences between dominant traits and recessive traits. What percentage of pea plants in the F_2 generation were with yellow seeds in…
List two differences between dominant traits and recessive traits. What percentage of pea plants in the $\displaystyle \mathrm{F}_{2}$ generation were with yellow seeds in Mendel's cross between the pea plants having yellow (YY) and green coloured (yy) seeds ?
Marking-scheme solution
| Dominant Traits | Recessive Traits |
| (i) When both dominant and recessive traits are inherited, the dominant trait gets expressed. | (i) When both dominant and recessive traits are inherited, the recessive trait does not get expressed. |
| (ii) A single copy of dominant trait is enough to get it expressed. | (ii) Both the copies of a trait should be recessive to get it expressed. |
$\displaystyle 75$% yellow seeds
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.